EP 0232023 B1 19900725 - TREATMENT OF CATALYST PARTICLES
Title (en)
TREATMENT OF CATALYST PARTICLES
Publication
Application
Priority
FR 8600724 A 19860120
Abstract (en)
[origin: EP0232023A1] The invention relates to processes and apparatus for the elutriation of particles of a Ziegler-Natta type alpha-olefin polymerisation catalyst, based on transition metal compound(s) and preferably also comprising magnesium compounds, by means of an elutriation liquid which is a non-polar liquid, for example a hydrocarbon chemically inert in relation to the catalyst. A preferred process comprises the following stages:- preparation of a homogeneous suspension of the catalyst in the elutriation liquid. and- elutriation of the catalyst by means of the suspension and the elutriation liquid in one or two elutriation columns (F1),(F2), separating the large and fine catalyst particles respectively.The apparatus comprises a tank (M2) for the preparation of the catalyst suspension and the elutriation column or columns (F1)(F2).The invention also relates to elutriation of Ziegler-Natta catalyst particles using a non-polar elutriation liquid and wherein a special polar aprotic additive is employed, for example an organo-metallic compound.
IPC 1-7
IPC 8 full level
B01J 37/06 (2006.01); B03B 5/62 (2006.01); C08F 4/60 (2006.01); C08F 4/62 (2006.01); C08F 4/64 (2006.01); C08F 10/00 (2006.01)
CPC (source: EP KR US)
B01J 37/06 (2013.01 - EP US); B03B 5/623 (2013.01 - EP US); C08F 4/64 (2013.01 - KR); C08F 10/00 (2013.01 - EP US); C08F 2410/06 (2021.01 - EP)
Citation (examination)
FR 2116698 A5 19720721 - NAPHTACHIMIE SA
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0232023 A1 19870812; EP 0232023 B1 19900725; AT E54840 T1 19900815; BR 8700223 A 19871201; CA 1288088 C 19910827; CN 1018432 B 19920930; CN 1065071 A 19921007; CN 87100304 A 19870916; DE 3763850 D1 19900830; ES 2016342 B3 19901101; FI 870216 A0 19870120; FI 870216 A 19870721; FI 87656 B 19921030; FI 87656 C 19930210; FR 2593087 A1 19870724; FR 2593087 B1 19900907; HK 9293 A 19930219; JP H0655788 B2 19940727; JP S62223207 A 19871001; KR 880007572 A 19880827; KR 940000015 B1 19940105; NO 171893 B 19930208; NO 171893 C 19930519; NO 870214 D0 19870119; NO 870214 L 19870721; PT 84140 A 19870201; PT 84140 B 19890531; SG 48092 G 19920612; US 4714553 A 19871222; US 4818417 A 19890404; US 4931193 A 19900605
DOCDB simple family (application)
EP 87300313 A 19870115; AT 87300313 T 19870115; BR 8700223 A 19870120; CA 527577 A 19870119; CN 87100304 A 19870119; CN 92103210 A 19920503; DE 3763850 T 19870115; ES 87300313 T 19870115; FI 870216 A 19870120; FR 8600724 A 19860120; HK 9293 A 19930211; JP 978487 A 19870119; KR 870000412 A 19870120; NO 870214 A 19870119; PT 8414087 A 19870119; SG 48092 A 19920429; US 216287 A 19870112; US 27430488 A 19881118; US 7163887 A 19870709